Will taking Clomid earlier mean an earlier O?

Trying to find people who might have taken Clomid both on 3-7 and 5-9 to see if they O'd on different days. I normally take it 5-9 and have been ovulating CD20. I'd really rather ovulate earlier than that. My doctor has increased my dose to try and make me O earlier but it hasn't worked so far. I have heard that if you take it earlier you might O earlier? Like I may O 11 days after my last pill so if I take it 3-7 I'd be O'ing on CD18 instead? I'd love to hear any experiences you have with taking it on different days.